Improvement in weft-stop mechanisms for looms



o. Mf.. sfTILmftAN. l wEFTsT oP MEcH-ANISM Fon Looms.

N.1'59-,596- Patented Nov. 2,1875. i Ik?! i v WITNESSES v IJWEJVTORAttorney UNITED STATES ORSEMUS M. STILLMAN, OF WESTERLY, RHODE ISLAND.`

IMPROVEMENT IN wi-:FT-sToP MEcHANlsMs FOR Looms.

Specification forming part of Letters Patent No. 169,596, dated November2, 1875; application filed April 6, 1815.

To all whom it may concern:

Be it known that I, ORSEMUS M. STILL- MAN, of Westerly, in the county ofWashington and in the State of Rhode Island, have invented certain newand useful Improvements in Looms; and do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings and to the letters of referencemarked thereon, making a part of this specification.

The nature of my invention consists in the construction and arrangementof a stop-motion for looms of that class in which the shed is closedvupon the weft-thread as the lay moves forward, and before the thread isbeaten up to the web, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my `inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in which-Figure l is a plan view of a part of a loom embodying my invention. Fig.2 is a transverse vertical section of the same through the line a: m,Fig. 1. Fig. 3 is a rear view of a part of the lay of the loom. Fig. 4is a perspective view of the stop-motion.

A represents the frame of a loom. B is the breast-beam thereof. C is thelay, on the front of which is the protecting-rod D, with pin or arm E,for operating the beltfshifting lever G when the shuttle fails tooperate the protecting-rod. Over the protecting-pin E is a small bar orlever, H, pivoted to a stand 0n the lay C, and said lever is sustainedby a small wire spring, a. The long and forward end of this lever isadapted to vibrate up and down, so as to strike the belt-shifting leverG, placed under the breast-beam, or pass below it, according as thefilling is present or absent as the lay beats up, the downwardvibrations being produced by the thread of filling' coming'against a setot' thin metal plates, b,

passing through between the splits or dents lV of the reed I from behindit. Theplates b are attached to arms e, hinged on the back of the lay,and having extensions, which project forward and connect with a plate,f, under the inner end of the bar or lever H. As the lay moves forwardand the shed closes, suftiy cient friction is produced on thewcft-thread tached to the under side of the breast-beam, Y

by which the lever is kept up until it strikes the shifting-lever andstops the loom. The thin plates b are placed at the height in the reedthat the cloth comes when the lay vis up to it. When a thread of fillingis thrown into.-

the shed the lay comes forward, with the plates, against the thread 5and, as the shed ucloses upon the thread, sufficient friction isproduced in forcing along the thread to press back the plates, andthereby change the position of the linger, that would otherwise strikethe beltshifting lever. y A short arm, i, is attached to the und er sideof the protectingrod l), and connected to the arm e back ofthe lay by aloose link, p, so constructed as to be tightened up by the protector-rodwhen the shuttle leaves the box. The rocking of the protecting-rodthrows back the plates b as the shuttle leaves the box, thus being outof the way as it passes, and allowed to come forward, as the shuttleenters the other box, by the action of the spring a, on the lever lH,communicated to said plates through the plate f and arms e. The shuttle,when moved out and in, rocks the protecting-rod,which loosens theconnection with the plates when the shuttle is in, and leaves them freetofbe acted on by the filling. When the shuttle leaves the box theprotecting-rod rocks sufficiently to tighten up the connection withtheplates, and brings them back out of the way of the passing shuttle. Yv

`Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l. In combination with a lever, H, pivoted to a stand -on the lay of aloom, one or more thin plates, b, projecting between the dents ofthereed toward the cloth, and a connectlneoljiaiism',i substantially asdescribed,

whereby, when the 'plate or plates are driven back by the filling, thelever will be moved sufciently to prevent its acting on thebeltshippinglever of the loom, substantially as 'y herein set foth.

2. rEhe combination, With the lay and reed of a 1oomof the thin platesb, arms e, plate f, and pivoted lever "H, with sustainingsprng a, allsubstantially as and for the purposes herein set forth. f

3; The supporting arml or piece h, attachedto the breast-beam B, incombination with the bar or lever H, for sustaining and guiding suchlatter 'device against or below thebeltlshifting:lever. substantially ashereinf` set forth. 4; The combination, lWith'the plates b and arms e,of the protecting-rod D,` anni, loose link p, and the arm e, forremoving the plates from the path of the shuttle by the rocking .of theprotectin-gaod, substantially as herein set forth.

In testimony that I claim the foregoing I have hereunto set4 my handthis31st day of March, 1875.

OBSEMUS M. STILLMAN.

Witnesses:-

O. S. HYDE, T. R. HYDE.

